种（species）

was first considered by Siegel to be the iconic animal in 1998

was first proposed by Siegel to be the endangered species in 2004

was not qualified scientifically as the endangered species until 2005

was not officially under the government protection until 2008

how the scientists tried to protect endangered species

how the symbolic endangered species has been chosen

the relation between global warming and endangered species

the problems in and the future of endangered species protection

Vaporize metal atoms to be analyzed

Cause the metal species to form carbides which are more volatile

Convert the graphite furnace to ash to avoid carbide formation

Burn off organic species that would interfere with the elemental analysis

public class X {  }     public class Y extends X { }

public interface Shape { }     public interface Rectangle extends Shape{ }

public interface Color { }     public class Shape { private Color color； }

public interface Species { }     public class Animal { private Species species； }

public class Person { }    public class Employee {      public Employee（Person person） { }

interface Component { }     class Container implements Component {   private Component[] children； }

has never actually been observed, but is believed to be theoretically possible

is the series of small changes that transforms one species into another

lacks evidence, and therefore should not be considered a scientific fact

is an evolutionary process involving small changes within a species

occurs wherever there are environmental changes in a species' habitat

对

错

Biologists began to study new species of turtles for Chinese food markets.

Biologists discovered a few rare species of turtles as a result of search previously

Some species of turtles will soon be extinct if they are caught and killed at the present speed.

Turtles will soon be a target for rare collectors as dear as pearl and diamond.

Discovering new species.

Protecting rare species.

Restoring extinct species.

Reforming existing species.

Because of their characteristics as double organisms, it is difficult to classify lichens.

Over 15,000 varieties of lichens have been identified.

Double organisms should always be classified as separate species.

Taxonomists always find it difficult to classify new species of plants.

an endangered specie

endangered species

endangering species

an endangered species

public interface Person { }  public class Employee extends Person { }

public interface Shape { }  public class Employee extends Shape { }

public interface Color { }  public class Employee extends Color { }

public class Species { }  public class Animal （private Species species；）

interface Component { }  Class Container implements Component （ Private Component[ ] children；  ）

public interface Person {}  Public class Employee extends Person {}

public interface Shape {}  public interface Rectangle extends Shape {}

public interface Color {}  public class Shape { private Color color； }

public class Species {}  public class Animal { private Species species； }

interface Component {} Class Container implements Component {private Component [] children；

provide an example of a species that has been shown to undergo macroevolution

demonstrate that many species have undergone the process of microevolution

prove that all living things descended from a common ancestor

question the use of the fossil record to support Darwinism

highlight the dangers to the environment of pollution from industrial complexes